首页
登录
职称英语
[originaltext] An often overlooked renewable energy resource is the power of
[originaltext] An often overlooked renewable energy resource is the power of
游客
2023-08-24
57
管理
问题
An often overlooked renewable energy resource is the power of ocean waves. The relentless line of waves breaking along a coastline represents a steady stream of energy.(16)The problem is that the water in waves actually goes up and down, a motion which is hard to convert into a force pushing only one way, like a flowing river or a blowing wind.
Scientists at the University of California Berkeley designed an underwater device which they say not only solves this problem but has a dual application. "Our device has the advantage that we do not directly convert into electricity.(17)We can decide ourselves if we want to produce fresh water or electricity," Lehmann said. Their carpet-like mechanism, that rises and falls with waves, creates hydraulic pressure, pumping seawater towards the shore. The pressurized water can be used to run turbines(涡轮机), generating electricity. Or it can be pushed through special membranes(薄膜)that extract the salt to create fresh water.
Lehmann said larger versions of the wave carpet could power small coastal communities. "So in general the available resource of wave energy is in the order of 15% of the global energy demand, which is a lot. "
Mechanical engineer Reza Alam said to avoid possible impact on coastal ecosystems,(18)the wave carpet can be deployed in so-called " dead zones" where there is not enough oxygen for marine life to thrive.(19)"Placing a carpet on the seabed in those locations is definitely absolutely safe to the environment," he explained.
Alam said only one-square meter of the wave carpet could supply enough power for two typical American homes, which on a larger scale means that the ocean could cheaply power up entire coastal towns.
16. What is a problem of utilizing ocean waves according to the passage?
17. What is the dual function of the underwater device designed by scientists?
18. Which area should the carpet-like mechanism be deployed?
19. What do we know about the wave carpet?
选项
A、It can produce both electricity and fresh water.
B、It can extract the salt and help clean seawater.
C、It can produce electricity and help clean seawater.
D、It can produce drinkable water and help protect marine life.
答案
A
解析
短文中提到,这种技术既可以发电,又可以萃取淡水。
转载请注明原文地址:https://tihaiku.com/zcyy/2953569.html
相关试题推荐
[originaltext]IKEAisworkingwithBoKlokUKtobepartofarevolutionin
[originaltext]Someofthemostpracticallessonscomingoutofresearchin
[originaltext]Someofthemostpracticallessonscomingoutofresearchin
[originaltext]Someofthemostpracticallessonscomingoutofresearchin
[originaltext]Lessthan40yearsagointheUnitedStates.itwascommonto
[originaltext]W:Goodmorningandwelcometotheshow.Today’stopicshouldbe
[originaltext]W:Goodmorningandwelcometotheshow.Today’stopicshouldbe
[originaltext]M:TodaywehaveVictoriaColligan,theauthorofLadiesWhoLaun
[originaltext]M:ItisawholemonthsinceI’veboughtmynewvideocamera.But
[originaltext]M:ItisawholemonthsinceI’veboughtmynewvideocamera.But
随机试题
【B1】[br]【B4】A、teachB、helpC、playD、explainD注意到空格后面的them指的是alltherules,所以选D
AccordingtoEllen,theincreasingdemandforhiringisdueto[br][originalte
ThepurposeofissuingfreemedicalserviceinSierraLeoneis[originaltext]
Therearetwofactorswhichdetermineanindividual’sintelligence.Thefirs
设生产x单位产品的总成本C是x的函数C(x),固定成本C(0)为20元,边际成本
开放性气胸的紧急处理原则是A.立即清创,胸壁伤口缝合 B.立即做胸腔穿刺抽气
十二指肠球部溃疡伴瘢痕性幽门梗阻的首选术式是 A.BillrothI式胃大
某矿停产检修,根据检修计划安排,由供电车间负责对井下中央变电所三、四段母线进行检
施工成本分析中,按施工进展进行的成本分析内容,不包括()。A.企业管理费分析
Ⅱ.管道和设备工程 某工程背景资料如下: 1.图6.Ⅱ为某配水阀室工艺管道
最新回复
(
0
)